Abstract: An iontophoresis electrode configured for positioning on a patient's skin during a drug treatment. The electrode includes a flexible backing layer having a first surface with an adhesive layer for holding the electrode together and for securing the electrode to the skin. A conductive material layer adheres to the adhesive layer. An absorbent pad layer, positioned adjacent the conductive material layer, holds a drug solution during the treatment. A dispersive material layer overlies the absorbent pad layer to disperse the solution evenly about a skin-electrode interface. The dispersive material layer and the flexible backing layer enclose the conductive material layer and the absorbent pad layer. A plurality of radially oriented slits extend through the conductive material layer at an aperture in the adhesive backing layer to form a site at which the drug solution can be injected into the absorbent pad layer. A snap-type electrical contact is attached to the conductive material layer.

Abstract: A disposable safety syringe having (i) a needle, and (ii) apparatus which, after use of the needle, permits the point of the needle to be withdrawn up into the syringe barrel to be shielded thereby to safeguard the user, i.e. to prevent accidental contact of the needle by an errant body part of the user, and (iii) additional apparatus for automatically locking the needle in the safe position to prevent reuse of the syringe.